Optimizating my code simulating a database

Question

I have been working on a program, simulating a small database where I could make queries, and after writing the code, I have executed it, but the performance is quite bad. I

Answer 1

No need to reinvent the wheel again, use FirebirdSQL embedded database instead. That combined with IBPP C++ interface gives you a great foundation for any future needs.

http://www.firebirdsql.org/

http://www.ibpp.org/